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Solnce55 [7]
3 years ago
7

If

Physics
1 answer:
Aleksandr-060686 [28]3 years ago
3 0

Answer:

A factor of 2*4 = 8

Explanation:

F_g = (G*m1*m2)/r^2  

where m1 and m2 are the two masses, G is Newton's gravitational constant, and r is the distance between the center of mass of the two objects.

So, if you double m1 and quadruple m2:

m1' = 2*m1

m2' = 4*m2

Then F_g' = (G*m1'*m2')/r^2 = (G*2*m1*4*m2)/r^2 = 8*(G*m1*m2)/r^2 = 8*F_g

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Practice Problems
vodomira [7]

(a) The acceleration of the salt shaker is 1.18 m/s².

(b) The distance traveled by the baseball player before coming to rest is 204.1 m.

<h3>Acceleration of the salt shaker</h3>

The acceleration of the salt shaker at the given coefficient of kinetic friction is determined as follows;

a = μg

a = 0.12 x 9.8

a = 1.18 m/s²

Acceleration of the baseball player is calculated as follows;

a = μg

a = 0.4 x 9.8

a = 3.92 m/s²

<h3>Distance traveled by the baseball player</h3>

The distance traveled by the baseball player before coming to rest is calculated as follows;

v² = u² - 2as

0 = 40² - 2(3.92)s

0 = 1600 - 7.84s

7.84s = 1600

s = 204.1 m

The complete question is below:

A baseball player slides into third base with an initial speed of 40 m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

Learn more about coefficient of friction here: brainly.com/question/20241845

8 0
3 years ago
Why does the speed of an object change when a force acts on it?
Crazy boy [7]
It changes because force is somewhat like pressure. Force is continuously against the object so as a result, speed changes .
7 0
4 years ago
A particle moves along the x axis. Its position is given by the equation
krok68 [10]

The position of the particle when it changes direction is x = 3.0 m

Explanation:

The position of the particle is given by the equation

x(t)=2.4+2.9t-3.5t^2

In order to determine its position when it changes direction, we need to  find the time t at which the velocity of the particle becomes zero.

The velocity of the particle si given by the derivative of the position, therefore:

v(t)=\frac{dx}{dt}=2.9-2\cdot 3.5t^{2-1}=2.9-7t

The velocity is zero when:

v(t)=0=2.9-7t\\7t=2.9\\t=\frac{2.9}{7}=0.41 s

And therefore, the position at t = 0.41 s is

x(0.41)=2.4+2.9(0.41)-3.5(0.41)^2=3.0 m

Learn more about position and velocity:

brainly.com/question/5248528

#LearnwithBrainly

3 0
4 years ago
Describe the particle movement as energy flows from your hand into a cube of ice.
dlinn [17]
B. Energy is added to the cube causing particles to speed up and spread out, causing the cube to melt.
8 0
3 years ago
Read 2 more answers
The law of Conservation of Matter states tht during a chemical reaction, the amount of matter
Diano4ka-milaya [45]
Is the same as the amount that is used to make the chemical reaction. The Law of conservation of Matter states that matter cannot be added or removed, or created or destroyed. This means that the amount of matter is always the same

hope this helps
8 0
4 years ago
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